package cn.yunhe.filter;

import cn.yunhe.entity.User;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@WebFilter(filterName = "IsLoginFilter",urlPatterns = {"GetUserShoppingServlet","AddOrderDetailServlet"})
public class IsLoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request= (HttpServletRequest) servletRequest;
        HttpSession session=request.getSession();
        User user= (User) session.getAttribute("Curr_User");

        if(user!=null){
            filterChain.doFilter(servletRequest, servletResponse);
        }else{
            //System.out.println("success");
            request.getRequestDispatcher("/login.jsp").forward(servletRequest,servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}
